Creating a MySQL Database Class Using the Singleton Design Pattern

Introduction

Using the Singleton Pattern is a simple way to limit the number of instances of an object to just one, helps keep database connections organized, and saves memory. We will save details on the abstractions of the Singleton Pattern, and limit explanation to the code on this page used to create the mysqli_database object.

MySQL database class code

The code below is a basic example of how to use the Singleton Pattern to create a database class. This concept makes it easy to stay organized and use a centralized object for all of your database connections. Keep in mind that this is only a very basic level example, and there are many things that can be done to improve this class. Some functionality we will add in later parts of this tutorial include: